Running Gag: Every time Jimmy's team hits the ball out the park, it hits Hugh on the head.
When Principal Whilloughby announces that Jimmy's team is going to Japan, everyone in the classroom cheers and gets all exited, including Butch and his teamates. Why would Butch's team be happy that Jimmy's team is going to Japan and not theirs. Not to mention Butch pretty much hates Jimmy.
When they will be old men, Sheen, Jimmy, and Carl (or at least Jimmy) will have Alzheimer's disease, because when they were made old, they couldn't remember anything.
Carl's mom is 42 years old.
When Old Jimmy first woke up, it was around 7:00 AM. About a minute later, Old Carl and Old Sheen arrived. After about a couple of minutes, they drove off to the Candy Bar. The sign for the Seniors' Buffet said 3:00 PM to 5:00 PM. How can they go to the Seniors' Buffet when it is about 7:05 AM?
The uniforms have their first names on the back, instead of their last names. In little league, minor league, and major league baseball the players have their last names on the back; batboys have their first names on the back.
The Retroville 9 has no manager or coach. Jimmy is the captain but can't make the decisions.
Terry is on Butch's Butchers, even though he moved to another school in "Safety First." Chuck Lestor is also on this team, even though he moved to Greece in "Hall Monster."
The scoreboard at the World Championship Game in Japan shows the Retroville 9 (the away team) on the bottom of the scoreboard. Usually, most sports have the away team on the top of the scoreboard.
The credits airing with this episode are for "Operation: Rescue Jet Fusion."
Carl: What do we do now?
Sheen: There's only one thing we can do.
(scene cuts to a small lizard on a cage)
Sheen: Bonzilla?!? He's only 10 inches high. What a rip-off! He probably couldn't hurt...
(Bonzilla blows fire on Sheen)
Sheen: (moans) Jimmy, what's the Japanese word for "Ambulance"? (faints)
Store Clerk: Doom Bringer II is for mature players only due to Violence, Exaggerated Mayhem, and Old Lady Kicking.
Tremendous Jackson: Somewhere in the Rytridian Galaxy, Ultralord weeps.
Tremendous Jackson: As I gaze upon these players' young faces, I am filled with pride. They're here because of their hard work and patience, long hours of practice.
Tremendous Jackson: Not because of any high-tech gloves--
(Jimmy looks surprised)
Tremendous Jackson: --or automatic home-run hitting bats.
(Jimmy smiles sheepishly, embarrassed)
Carl: (singing) Oh, I wish I was a llama in a great big llama world....
Carl: I stole Jimmy's toast the other day. Sometimes I dream about girls.
Jimmy: Maybe we'd better leave....
Carl: I don't think Ultralord exists--
Sheen: Lalalalalalalala! I don't wanna hear it!
Carl: My mom's really 42. I ripped a--
Sheen: Make him stop!!!
Old Carl: Jimmy, is that you way over there?
Old Jimmy: Guys! Something went horribly wrong!
Old Sheen: Oh, gee you think? And another thing: kids today wear their pants too low! They're down under their stomachs, for cryin' out loud!
Ms. Fowl: Ball three!!
Sheen: Ball!?! That was right down the middle! I've seen better calls at a square dance!!
Ms. Fowl: Jimmy's throwing lollipops! The day he throws down Broadway is the day I dance on the moon!!
Sheen: How dare he throw your father out of the store?!
(snap, snap, snap)
Old Carl: Sheen, quit snapping your fingers! I can't hear the music.
Old Sheen: That's not my fingers! It's my spine!
Old Sheen: You know, when I was a kid, the sky was bluer! And a quarter would buy you groceries for a week!
Old Jimmy: Gas planet. Does anyone remember what we drove down here to get?
Sam: Hey, Oldilocks, what's the big idea, you and your bingo buddy takin' all the rice pudding from the buffet?!
Old Sheen: It says "Seniors Eat Dessert Free"!
Sam: You're supposed to buy an entre first!
Old Carl: We did. I had a hamburger here yesterday!
Old Sheen: Hey! I know what you're doing! You're trying to take me to the nursing home! (pounds on the car's window) Let me out! Let me out!
Old Carl: Sheen, careful! This car's going an excess of 7 miles.
(Old Sheen pants, checks his pulse, and faints)
Sheen: I demand my constipational rights!
This episode can be seen on the DVD Jet Fusion.
"The Retroville 9" was aired during the 2003 baseball playoffs.
Baseball Legend: Tremendous Jackson
Tremendous Jackson might be a spoof of famous baseball/football legend Bo Jackson.
Name: The Retroville 9
This is an obvious spoof of the lesser known anime show Princess 9. In this show a group of 9 young baseball players try to make it to the championships.
Music: "Party at Neutrons"
The music Libby was listening to in the first ballgame was the song from "Party At Neutron's" by The Men Pretending To Be Boys.
Grumpy Young Men: Plot
This plot of this episode is similar to the Dexter's Laboratory episode "Old Man Dexter" and the Fairly Odd Parents "Foul Balled."
Old Sheen: Behavior
Old Sheen is acting like Bob Widmer.
Jimmy's Baseball Team: Being horrible baseball players
This could be a take-off of Charlie Brown's Baseball team in the Comic strip Peanuts and in the TV show Charlie Brown when his baseball team always loses. Jimmy's basball team and Charlie Brown's Baseball team always get shut out. When Carl Plays outfield and always dosn't catch the ball,he is like the peanuts character Lucy, who plays outfield and cannot catch fly-balls. For More info, go to www.snoopy.com .
Barry Bonds: Character
Berry Bonds is a spoof of the real Barry Bonds.
Video Game: Doom Bringer II
The name of this game is probably a reference to the ultra-violent Doom game series.
Cindy: Do you want to get your Buttercup Girls helpfulness badge or not?
The Buttercup Girls are another spoof on Girl Scouts.
Sheen: I knew it! I'm really Mike Piazza, aren't I?
Sheen is the catcher for the Retroville 9, and Mike Piazza is the catcher for the New York Mets.
Title: Grumpy Young Men
The title of this episode is a reference to the film Grumpy Old Men. There is also an episode of "The Fresh Prince of Bel Air" called "Grumpy Young Men".
Carl: Today, I consider myself the luckiest kid on the face of the earth.
This is a take-off of the famous closing speech of Lou Gehrig, a former baseball player.